Nick Stockton at Wired.com has put together a compilation of 3 different ways to visualize the melting arctic ice cap. Above is one example:
The gallery of strange figures you see above represents the outlines of Arctic sea ice extent month by month from 1979 to the present.
… generated from National Snow and Ice Data Center (NSIDC) north pole sea ice extent. The images are arranged in a grid with the years across the top from 1979 to 2014 and the months running down the image from January to December. Click image for full resolution. NASA’s Scientific Visualization Studio
Check out Stockton’s article for other awesome animations of the melting ice cap.